GitHub · Staff Frontend Engineer
An advanced querying & validation component — designed & built as its primary developer. It ships in the open — on every repository's issues page and the global issues dashboard.
— Live recreation · try it
An interactive explainer of the parsing & validation logic — the code is proprietary, but you can use the real thing live on any repository's issues page.
Try it live on GitHubStructured search is powerful but unforgiving — one malformed qualifier and a user gets nothing back, with no idea why. The component had to make a complex query language feel approachable: parse intent in real time, validate before submission, and teach the syntax through suggestion rather than documentation.
What began as a single input grew through several deliberate passes — tightening the tokenization model, streamlining the validation feedback so errors read as guidance, and reducing visual noise until the interface disappeared behind the task. Each iteration removed more than it added.
New qualifiers, value types, and product surfaces arrive continuously. The architecture had to absorb them without regressions — so the parser, validation rules, and suggestion engine are decoupled, letting new capabilities land as data, not rewrites.
Primary developer & designer — I architected the parsing model, accessibility, and the test strategy (unit, VRT, and end-to-end), and wrote roughly 95% of the code. A small team contributes on rare occasion, but I own it front-to-back and keep 500K+ daily queries reliable.
— Built with